| 电解液中添加LiBOB改善LiMn2O4的高温性能 |
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| 引用本文： | 宋晓娜,王锦富.电解液中添加LiBOB改善LiMn2O4的高温性能[J].电池,2012,42(1):28-29. |
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| 作者姓名： | 宋晓娜 王锦富 |
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| 作者单位： | 1. 浙江天虹能源科技有限公司,浙江湖州,313100
2. 杭州金色能源科技有限公司,浙江杭州,311400 |
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| 摘 要： | 由恒流充放电和电化学阻抗等研究发现,向电解液中添加双草酸硼酸锂(LiBOB)能改善锰酸锂(LiMn2O4)的高温性能。以0.5C在3.0～4.2 V充放电,在45℃循环300次,容量保持率从82.6%提高到90.5%,循环400次,从73.0%提高到88.6%;在60℃循环300次,从76.5%提高到87.0%。固体电解质相界面(SEI)膜的初始形成电位降至2.0 V。
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| 关 键 词： | 双草酸硼酸锂(LiBOB) 锰酸锂(LiMn2O4) 固体电解质相界面(SEI)膜 |
Improve high temperature performance of LiMn2O4 by adding LiBOB in electrolyte |
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| SONG Xiao-na
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WANG Jin-fu.Improve high temperature performance of LiMn2O4 by adding LiBOB in electrolyte[J].Battery Bimonthly,2012,42(1):28-29. |
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| Authors: | SONG Xiao-na WANG Jin-fu |
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| Affiliation: | 1.Zhejiang Tianhong Energy Technology Co.,Ltd.,Huzhou,Zhejiang 313100,China;2.Hangzhou Future Energy Technology Co.,Ltd.,Hangzhou,Zhejiang 311400,China) |
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| Abstract: | Adding lithium bisoxalatoborate(LiBOB) into electrolyte could improve high temperature performance of lithium manganese oxide(LiMn2O4)by the research of galvanostatic charge-discharge and electrochemical impedance spectroscopy.When charged-discharged with 0.5 C in 3.0～4.2 V,the capacity retention rate was improved from 82.6% to 90.5% after 300 cycles at 45 ℃,improved from 73.0% to 88.6% after 400 cycles,improved from 76.5% to 87.0% after 300 cycles at 60 ℃.The solid electrolyte interface(SEI)film formation voltage was lowered to 2.0 V. |
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| Keywords: | lithium bisoxalatoborate(LiBOB) lithium manganese oxide(LiMn2O4) solid electrolyte interface(SEI)film |
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